Chisel (in surgery ), - a tool designed for trepanation of the bone [1] and removal of bone tumors, as well as for cutting off contaminated bone areas during wound treatment [2] .
There are two types of the working part of the bit: flat and grooved. To strike a bit, metal surgical hammers (usually made of cast iron ) are usually used, but wooden hammers can also be used [1] .
Description
The chisel consists of four parts: a blade , a cutting edge, a handle and an anvil [2] . The blade blade can be flat (rectangular, trapezoidal, angular) and grooved, as well as straight or curved. The working part of the straight bit is 10–40 mm, the grooved bit is 4–40 mm [2] . The handles are flattened, square, hexagonal and round [2] .
Chisels must be especially strong to withstand prolonged repeated impacts, heavy enough not to bounce off the bone after striking, their blades must retain cutting properties for a long time, and there should be no formations on the edge [2] .
Notes
- ↑ 1 2 Turgunov E.M., Nurbekov A.A. Surgical Instruments . Educational visual aid. Karaganda, 2008.48 s.
- ↑ 1 2 3 4 5 Semenov G.M. Modern surgical instruments . St. Petersburg: Peter, 2006.352 s. (series quick start guide). ISBN 5-469-00785-5